org.apache.flink.runtime.state

枚举 CheckpointedStateScope

java.lang.Object

java.lang.Enum<CheckpointedStateScope>

org.apache.flink.runtime.state.CheckpointedStateScope

所有已实现的接口:

Serializable, Comparable<CheckpointedStateScope>

public enum CheckpointedStateScope
extends Enum<CheckpointedStateScope>

The scope for a chunk of checkpointed state. Defines whether state is owned by one checkpoint, or whether it is shared by multiple checkpoints.

Different checkpoint storage implementations may treat checkpointed state of different scopes differently, for example put it into different folders or tables.

枚举常量概要

枚举常量

枚举常量和说明
EXCLUSIVE Exclusive state belongs exclusively to one specific checkpoint / savepoint.
SHARED Shared state may belong to more than one checkpoint.

方法概要

限定符和类型	方法和说明
static CheckpointedStateScope	valueOf(String name) 返回带有指定名称的该类型的枚举常量。
static CheckpointedStateScope[]	values() 按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。

从类继承的方法 java.lang.Enum

clone, compareTo, equals, finalize, getDeclaringClass, hashCode, name, ordinal, toString, valueOf

从类继承的方法 java.lang.Object

getClass, notify, notifyAll, wait, wait, wait

枚举常量详细资料

EXCLUSIVE

public static final CheckpointedStateScope EXCLUSIVE

Exclusive state belongs exclusively to one specific checkpoint / savepoint.

SHARED

public static final CheckpointedStateScope SHARED

Shared state may belong to more than one checkpoint.

Shared state is typically used for incremental or differential checkpointing methods, where only deltas are written, and state from prior checkpoints is referenced in newer checkpoints as well.

方法详细资料

values

public static CheckpointedStateScope[] values()

按照声明该枚举类型的常量的顺序, 返回 包含这些常量的数组。该方法可用于迭代 常量, 如下所示:

for (CheckpointedStateScope c : CheckpointedStateScope.values())
    System.out.println(c);

返回:

按照声明该枚举类型的常量的顺序返回的包含这些常量的数组

valueOf

public static CheckpointedStateScope valueOf(String name)

返回带有指定名称的该类型的枚举常量。 字符串必须与用于声明该类型的枚举常量的 标识符完全匹配。(不允许有多余 的空格字符。)

参数:

name - 要返回的枚举常量的名称。

返回:

返回带有指定名称的枚举常量

抛出:

IllegalArgumentException - 如果该枚举类型没有带有指定名称的常量

NullPointerException - 如果参数为空值